Workflows
Container job
Quick answer
A container job runs all of a job's steps inside a specified container image rather than directly on the runner.
A container job runs all of a job's steps inside a specified container image rather than directly on the runner.
Why it matters
It gives you a reproducible toolchain, but caching behaves differently: paths inside the container are not the paths the cache action sees on the host.
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Related
Artifact retentionArtifact retention is the period GitHub keeps workflow artifacts before deleting them, defaulting to 90 days and configurable per repository or per upload.Build matrixA build matrix is a GitHub Actions feature that expands one job definition into many parallel jobs across combinations of variables such as OS and language version.Composite actionA composite action bundles several workflow steps into a single reusable action defined in YAML, without needing JavaScript or a container.Concurrency groupA concurrency group is a named lock that limits how many workflow runs matching that name can be in progress at once.